EX-10.2



 Exhibit 10.2 

REGISTRATION RIGHTS AGREEMENT 

This Registration Rights Agreement (this “Agreement”) is made and entered into as of June 17, 2014, between
Cleveland BioLabs, Inc., a Delaware corporation (the “Company”), Mr. Mikhail Mogutov (“Mogutov”), and certain other purchasers (the “Additional Purchasers” and, together with
Mr. Mogutov, the “Purchasers”) identified in the Securities Purchase Agreement, dated as of the date hereof, between the Company, Mr. Mogutov and the Additional Purchasers (the “Purchase
Agreement”). This Agreement is made pursuant to the Purchase Agreement. 
 The Company and the Purchasers each hereby agrees as
follows: 
 1. DEFINITIONS.  

Capitalized terms used and not otherwise defined herein that are defined in the Purchase Agreement shall have the meanings given such terms in
the Purchase Agreement. As used in this Agreement, the following terms shall have the following meanings: 

“Advice” shall have the meaning set forth in Section 7(c). 

“Commission” shall mean the United States Securities and Exchange Commission. 

“Demand Notice” shall have the meaning set forth Section 2(a). 

“Effectiveness Date” means, (i) with respect to the Initial Registration Statement required to be
filed hereunder pursuant to a Demand Notice that is being provided within 60 calendar days of the date hereof, the 60th calendar day following the receipt of the Demand Notice (or in the event of a “full review” by the Commission, the
120th calendar day following the receipt of the Demand Notice), (ii) with respect to the Initial Registration Statement required to be filed hereunder pursuant to a Demand Notice that is being provided more than 60 calendar days of the date
hereof, the 90th calendar day following the receipt of the Demand Notice (or, in the event the of a “full review” by the Commission, the 120th calendar day following the receipt of the Demand Notice), or (iii) with respect to any
additional Registration Statements which may be required pursuant to Section 4(c), the 90th calendar day following the date on which an additional Registration Statement is required to be filed hereunder; provided, however, that in the
event the Company is notified by the Commission that one or more of the above Registration Statements will not be reviewed or is no longer subject to further review and comments, the Effectiveness Date as to such Registration Statement shall be the
fifth (5th) Trading Day (as defined in the Purchase Agreement) following the date on which the Company is so notified if such date precedes the dates otherwise required above,
provided, however, that if such Effectiveness Date falls on a day that is not a Trading Day, then the Effectiveness Date shall be the next succeeding Trading Day. 

“Effectiveness Period” shall have the meaning set forth in Section 2(a). 

“Event” shall have the meaning set forth in Section 2(d). 

“Event Date” shall have the meaning set forth in Section 2(d). 







 “Filing Date” means, with respect to the Initial Registration Statement
required hereunder, the 30th calendar day following the receipt of a Demand Notice and, with respect to any additional Registration Statements which may be required pursuant to Section 4(c), the earliest practical date on which the
Company is permitted by SEC Guidance to file such additional Registration Statement related to the Registrable Securities. 

“Holder” or “Holders” means the holder or holders, as the case may be, from time to time of
Registrable Securities. 
 “Indemnified Party” shall have the meaning set forth in Section 6(c). 

“Indemnifying Party” shall have the meaning set forth in Section 6(c). 

“Initial Registration Statement” means the initial Registration Statement filed pursuant to this Agreement. 

“Initiating Holders” shall have the meaning set forth Section 2(a). 

“Issuer Filing” shall have the meaning set forth in Section 3(a). 

“Losses” shall have the meaning set forth in Section 6(a). 

“Plan of Distribution” shall have the meaning set forth in Section 2(a). 

“Prospectus” means the prospectus included in a Registration Statement (including, without limitation, a prospectus
that includes any information previously omitted from a prospectus filed as part of an effective registration statement in reliance upon Rule 430A promulgated by the Commission pursuant to the Securities Act), as amended or supplemented by any
prospectus supplement, with respect to the terms of the offering of any portion of the Registrable Securities covered by a Registration Statement, and all other amendments and supplements to the Prospectus, including post-effective amendments, and
all material incorporated by reference or deemed to be incorporated by reference in such Prospectus. 
 “Registrable
Securities” means, as of any date of determination, (a) all of the Shares (as defined in the Purchase Agreement) issued, (b) all Warrant Shares (as defined in the Purchase Agreement) then issued and issuable upon exercise of
the Warrants (as defined in the Purchase Agreement) (assuming on such date the Warrants are exercised in full without regard to any exercise limitations therein), and (c) any securities issued or then issuable upon any stock split, dividend or
other distribution, recapitalization or similar event with respect to the foregoing; provided, however, that any such Registrable Securities shall cease to be Registrable Securities (and the Company shall not be required to maintain
the effectiveness of any, or file another, Registration Statement hereunder with respect thereto) for so long as (a) a Registration Statement with respect to the sale of such Registrable Securities is declared effective by the Commission under
the Securities Act and such Registrable Securities have been disposed of by the Holder in accordance with such Registration Statement, (b) such Registrable Securities have been previously sold in accordance with Rule 144, or (c) such
securities become eligible for resale without volume or manner-of-sale restrictions and without current public information pursuant to Rule 144 as set forth in a written opinion letter to such effect, addressed, delivered and acceptable to the
Transfer 

  
 2 








 
Agent and the affected Holders (assuming that such securities and any securities issuable upon exercise, conversion or exchange of which, or as a dividend upon which, such securities were issued
or are issuable, were at no time held by any Affiliate of the Company, and all Warrants are exercised by “cashless exercise” as provided in Sections 3(b) and (c) of each of the Warrants), as reasonably determined by the
Company, upon the advice of counsel to the Company. 
 “Registration Statement” means any registration statement
required to be filed hereunder pursuant to Section 2(a) and any additional registration statements contemplated by Section 4(c), including (in each case) the Prospectus, amendments and supplements to any such registration
statement or Prospectus, including pre- and post-effective amendments, all exhibits thereto, and all material incorporated by reference or deemed to be incorporated by reference in any such registration statement. 

“Rule 144” means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended
from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same effect as such Rule. 

“Rule 415” means Rule 415 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended or
interpreted from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. 

“Rule 424” means Rule 424 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended or
interpreted from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. 

“Selling Stockholder Questionnaire” shall have the meaning set forth in Section 3(a). 

“SEC Guidance” means (i) any publicly-available written or oral guidance of the Commission staff, or any
comments, requirements or requests of the Commission staff and (ii) the Securities Act. 
 2. DEMAND SHELF
REGISTRATION.  
 (a) If at any time during the period ending on the third (3rd) year
anniversary of the date hereof, the Company receives a request (the “Demand Notice”) from Mr. Mogutov and/or Holders of at least fifty percent (50%) of the Registrable Securities then
outstanding (the “Initiating Holders”) that the Company file a registration statement with respect to outstanding Registrable Securities, the Company shall prepare and file with the Commission a
Registration Statement covering the resale of all of the Registrable Securities (unless the Company is instructed by any Holder not to include all or part of the Registrable Securities of such Holder) to include that are not then registered on an
effective Registration Statement for an offering to be made on a continuous basis pursuant to Rule 415. Each Registration Statement filed hereunder shall be on Form S-3 (except if the Company is not then eligible to register for resale the
Registrable Securities on Form S-3, in which case such registration shall be on another appropriate form in accordance herewith (such as Form S-1), subject to the provisions of Section 2(e)) and shall contain (unless otherwise directed
by at least a majority in interest of the Holders) substantially the 

  
 3 








 
“Plan of Distribution” attached hereto as Annex A. Subject to the terms of this Agreement, the Company shall use its reasonable best efforts to cause the Registration Statement filed
hereunder to be declared effective under the Securities Act as promptly as reasonably possible after the filing thereof, but in any event prior to the Effectiveness Date, and shall use its reasonable best efforts to keep such Registration Statement
continuously effective under the Securities Act until all Registrable Securities covered by such Registration Statement (i) have been sold thereunder or pursuant to Rule 144, or (ii) (A) may be sold without volume or manner-of-sale
restrictions pursuant to Rule 144 and (B) (I) may be sold without the requirement for the Company to be in compliance with the current public information requirement under Rule 144 or (II) the Company is in compliance with the current
public information requirement under Rule 144, as determined by the counsel to the Company pursuant to a written opinion letter to such effect, addressed and acceptable to the Transfer Agent and the affected Holders (the
“Effectiveness Period”). The Company shall telephonically request effectiveness of a Registration Statement as of 5:00 p.m. New York City time on a Trading Day. The Company shall immediately notify the Holders
via facsimile or by e-mail of the effectiveness of a Registration Statement on the same Trading Day that the Company telephonically confirms effectiveness with the Commission, which shall be the date requested for effectiveness of such Registration
Statement. The Company shall, by 9:30 a.m. New York City time on the Trading Day after the effective date of such Registration Statement, file a final Prospectus with the Commission as required by Rule 424. Failure to so notify the Holder within one
(1) Trading Day of such notification of effectiveness or failure to file a final Prospectus as foresaid shall be deemed an Event under Section 2(d). 

(b) Notwithstanding the registration obligations set forth in Section 2(a), if the Commission informs the Company that all of the
Registrable Securities cannot, as a result of the application of Rule 415, be registered for resale as a secondary offering on a single registration statement, the Company agrees to promptly inform each of the Holders thereof and use its
commercially reasonable efforts to file amendments to the Initial Registration Statement as required by the Commission, covering the maximum number of Registrable Securities permitted to be registered by the Commission, on Form S-3 or such other
form available to register for resale the Registrable Securities as a secondary offering, subject to the provisions of Section 2(e); with respect to filing on Form S-3 or other appropriate form, and subject to the provisions of
Section 2(d) with respect to the payment of liquidated damages; provided, however, that, prior to filing such amendment, the Company shall be obligated to use diligent efforts to advocate with the Commission for the registration of all
of the Registrable Securities in accordance with the SEC Guidance.  
 (c) Notwithstanding any other provision of this
Agreement and subject to the payment of liquidated damages pursuant to Section 2(d), if the Commission or any SEC Guidance sets forth a limitation on the number of Registrable Securities permitted to be registered on a particular
Registration Statement as a secondary offering (and notwithstanding that the Company used diligent efforts to advocate with the Commission for the registration of all or a greater portion of Registrable Securities), unless otherwise directed in
writing by a Holder as to its Registrable Securities, the number of Registrable Securities to be registered on such Registration Statement will first be reduced by Registrable Securities represented by Warrant Shares (applied, in the case that some
Warrant Shares may be registered, to the Holders on a pro rata basis based on the total number of unregistered Warrant Shares held by such Holders), and second by Registrable Securities represented by the Shares (applied to the Holders on a pro rata
basis based on the total  

  
 4 








 
number of unregistered Shares held by such Holders). In the event of a cutback hereunder, the Company shall give the Holder at least five (5) Trading Days prior written notice
along with the calculations as to such Holder’s allotment. In the event the Company amends the Initial Registration Statement in accordance with the foregoing, the Company will use its best efforts to file with the Commission, as promptly as
allowed by Commission or SEC Guidance provided to the Company or to registrants of securities in general, one or more registration statements on Form S-3 or such other form available to register for resale those Registrable Securities that were not
registered for resale on the Initial Registration Statement, as amended. 
 (d) If: (i) the Initial Registration Statement
is not filed on or prior to its Filing Date (if the Company files the Initial Registration Statement without affording the Holders the opportunity to review and comment on the same as required by Section 3(a) herein, the Company shall be
deemed to have not satisfied this clause (i)), or (ii) the Company fails to file with the Commission a request for acceleration of a Registration Statement in accordance with Rule 461 promulgated by the Commission pursuant to the Securities
Act, within five (5) Trading Days of the date that the Company is notified (orally or in writing, whichever is earlier) by the Commission that such Registration Statement will not be “reviewed” or will not be subject to further
review, or (iii) prior to the effective date of a Registration Statement, the Company fails to file a pre-effective amendment and otherwise respond in writing to comments made by the Commission in respect of such Registration Statement within
fifteen (15) Trading Days after the receipt of comments by or notice from the Commission that such amendment is required in order for such Registration Statement to be declared effective, or (iv) a Registration Statement registering for
resale all of the Registrable Securities is not declared effective by the Commission by the Effectiveness Date of the Initial Registration Statement, or (v) after the effective date of a Registration Statement, such Registration Statement
ceases for any reason to remain continuously effective as to all Registrable Securities included in such Registration Statement, or the Holders are otherwise not permitted to utilize the Prospectus therein to resell such Registrable Securities, for
more than ten (10) consecutive Trading Days or more than an aggregate of fifteen (15) Trading Days (which need not be consecutive calendar days) during any 12-month period, or (vi) the Company, at a time when a Registration Statement
is not effective as to all of the Registrable Securities, shall fail for any reason to satisfy the current public information requirement under Rule 144 as to the applicable Registrable Securities (any such failure or breach being referred to as an
“Event”, and for purposes of clauses (i), (iv) and (vi), the date on which such Event occurs, and for purpose of clause (ii) the date on which such five (5) Trading Day period is exceeded, and for
purpose of clause (iii) the date which such fifteen (15) Trading Day period is exceeded, and for purpose of clause (v) the date on which such ten (10) or fifteen (15) Trading Day period, as applicable, is exceeded being
referred to as “Event Date”), then, in addition to any other rights the Holders may have hereunder or under applicable law, on each such Event Date and on each monthly anniversary of each such Event Date (if the
applicable Event shall not have been cured by such date) until the applicable Event is cured, the Company shall pay to each Holder an amount in cash, as partial liquidated damages and not as a penalty, equal to one percent (1.0%) of the
aggregate Subscription Amount paid by such Holder pursuant to the Purchase Agreement and the maximum liquidated damages payable to a Holder under this Agreement shall be seven and one-half percent (7.5%) of the aggregate Subscription Amount. If
the Company fails to pay any partial liquidated damages pursuant to this Section 2(d) in full within seven days after the date payable, the Company will pay interest thereon at a rate of twelve (12%) per annum (or such lesser
maximum amount that is permitted to be paid by applicable law) to the Holder, accruing daily from the date such partial liquidated damages are due until such amounts, plus all such interest thereon, are paid in full. The partial liquidated damages
pursuant to the terms hereof shall apply on a daily pro rata basis for any portion of a month prior to the cure of an Event. 

  
 5 








 (e) If Form S-3 is not available for the registration of the resale of Registrable
Securities hereunder, the Company shall (i) register the resale of the Registrable Securities on another appropriate form and (ii) undertake to register the Registrable Securities on Form S-3 as soon as such form is available, provided
that the Company shall maintain the effectiveness of the Registration Statement then in effect until such time as a Registration Statement on Form S-3 covering the Registrable Securities has been declared effective by the Commission. 

3. PIGGYBACK REGISTRATIONS.  

(a) Subject to Sections 3(b) and (c), if, at any time during the Effectiveness Period, there is not an effective
Registration Statement covering all of the Registrable Securities and the Company shall determine to prepare and file with the Commission a registration statement relating to an offering for its own account or the account of others under the
Securities Act of any of its equity securities (an “Issuer Filing”), other than on Form S-4 or Form S-8 (each as promulgated under the Securities Act) or their then equivalents relating to equity securities to
be issued solely in connection with any acquisition of any entity or business or equity securities issuable in connection with the Company’s stock option or other employee benefit plans, then the Company shall deliver to each Holder a written
notice of such determination and, if within five (5) Trading Days after the date of the delivery of such notice, any such Holder shall so request in writing, the Company shall include in such registration statement all or any part of such
Registrable Securities such Holder requests to be registered; provided, however, that the Company shall not be required to register any Registrable Securities pursuant to this Section 3(a) that are eligible for resale
without volume or manner-of-sale restrictions pursuant to Rule 144 promulgated by the Commission pursuant to the Securities Act or that are the subject of a then effective Registration Statement. 

(b) If the Company proposes to register any of its securities under the Securities Act as contemplated by Section 3(a) and
such securities are to be distributed in an underwritten offering through one or more underwriters, the Company shall, if requested by any Holders pursuant to Section 3(a), use its reasonable best efforts to arrange for such underwriters
to include on the same terms and conditions that apply to the other sellers in such registration all the Registrable Securities to be offered and sold by such Holders among the securities of the Company to be distributed by such underwriters in such
registration.  
 (c) If the managing underwriter or underwriters of any proposed underwritten offering including Registrable
Securities pursuant to Section 3(a) informs the Company and each participating Holder that, in its or their opinion, the number of securities which the participating Holders intends to include in such offering exceeds the number which
can be sold in such offering without being likely to have a significant adverse effect on the price, timing or distribution of the securities offered or the market for the securities offered, then the securities to be included in such registration
shall be allocated pro rata among the participating Holders that have requested to participate in such registration based on the relative number of Registrable Securities requested by each participating Holder to be included in such underwritten
offering. 

  
 6 








 (d) No Person may participate in any underwritten offering hereunder unless such Person
(i) agrees to sell such Person’s securities on the basis provided in any underwriting arrangements approved by the Persons entitled to approve such arrangements and (ii) completes and executes all questionnaires, powers of attorney,
indemnities, underwriting agreements and other documents required under the terms of such underwriting arrangements and all applicable securities laws. The participating Holders shall be parties to such underwriting agreement, which underwriting
agreement shall (i) contain such representations and warranties by, and the other agreements on the part of, the Company to and for the benefit of such participating Holders as are customarily made by issuers to selling stockholders in
secondary underwritten public offerings and (ii) provide that any or all of the conditions precedent to the obligations of such underwriters under such underwriting agreement also shall be conditions precedent to the obligations of such
participating Holders. Any such participating Holder shall not be required to make any representations or warranties to or agreements with the Company or the underwriters in connection with such underwriting agreement other than representations,
warranties or agreements regarding such participating Holder, such participating Holder’s title to the Registrable Securities, such participating Holder’s authority to sell the Registrable Securities, such participating Holder’s
intended method of distribution, absence of liens with respect to the Registrable Securities, enforceability of the applicable underwriting agreement as against such participating Holder, receipt of all consents and approvals with respect to the
entry into such underwriting agreement and the sale of such Registrable Securities and any other representations required to be made by such participating Holder under applicable law, rule or regulation, and the aggregate amount of the liability of
such participating Holder in connection with such underwriting agreement shall not exceed such participating Holder’s net proceeds from such underwritten offering. 

(e) With respect to any underwritten offerings of Registrable Securities by the Holders, the Company agrees not to, and shall not be
obligated to, effect any public sale or distribution, or to file any Registration Statement covering any of its equity securities or any securities convertible into or exchangeable or exercisable for such securities, during the period not to exceed
ten (10) days prior and sixty (60) days following the effective date of such offering (or such lesser period that the managing underwriters in any underwritten offering permit). Notwithstanding the foregoing, the Company may effect the
registration of (A) equity securities and/or options or other rights in respect thereof solely registered on Form S-4 or Form S-8 (or successor form) or (B) shares of equity securities and/or options or other rights in respect thereof to
be offered to directors, employees, consultants, customers, lenders or vendors of the Company or its Subsidiaries or in connection with dividend reinvestment plans. 

4. REGISTRATION PROCEDURES.  

In connection with the Company’s registration obligations hereunder, the Company shall: 

(a) Not less than five (5) Trading Days prior to the filing of each Registration Statement and not less than one (1) Trading
Day prior to the filing of any related Prospectus or any amendment or supplement thereto (including any document that would be incorporated or deemed to be incorporated therein by reference), the Company shall (i) furnish to each Holder copies
of all such documents proposed to be filed, which documents (other than those incorporated or deemed to be incorporated by reference) will be subject to the review of such Holders, and (ii) cause its officers and directors, counsel and
independent registered public accountants to respond to such 

  
 7 








 
inquiries as shall be necessary, in the reasonable opinion of respective counsel to each Holder, to conduct a reasonable investigation within the meaning of the Securities Act. The Company shall
not file a Registration Statement or any such Prospectus or any amendments or supplements thereto to which the Holders of a majority of the Registrable Securities shall reasonably object in good faith, provided that, the Company is notified of such
objection in writing no later than five (5) Trading Days after the Holders have been so furnished copies of a Registration Statement or one (1) Trading Day after the Holders have been so furnished copies of any related Prospectus or
amendments or supplements thereto. Each Holder agrees to furnish to the Company a completed questionnaire in the form attached to this Agreement as Annex B (a “Selling Stockholder Questionnaire”) not later than the earlier of
two (2) Trading Days prior to the Filing Date and the end of the fourth (4th) Trading Day following the date on which such Holder receives draft materials in accordance with this Section 4(a). 

(b) (i) Prepare and file with the Commission such amendments, including post-effective amendments, to a Registration Statement and the
Prospectus used in connection therewith as may be necessary to keep a Registration Statement continuously effective as to the applicable Registrable Securities for the Effectiveness Period and prepare and file with the Commission such additional
Registration Statements in order to register for resale under the Securities Act all of the Registrable Securities, (ii) cause the related Prospectus to be amended or supplemented by any required Prospectus supplement (subject to the terms of
this Agreement), and, as so supplemented or amended, to be filed pursuant to Rule 424, (iii) respond as promptly as reasonably possible to any comments received from the Commission with respect to a Registration Statement or any amendment
thereto and provide as promptly as reasonably possible to the Holders true and complete copies of all correspondence from and to the Commission relating to a Registration Statement (provided that, the Company shall excise any information contained
therein which would constitute material non-public information regarding the Company), and (iv) comply in all material respects with the applicable provisions of the Securities Act and the Exchange Act with respect to the disposition of all
Registrable Securities covered by a Registration Statement during the applicable period in accordance (subject to the terms of this Agreement) with the intended methods of disposition by the Holders thereof set forth in such Registration Statement
as so amended or in such Prospectus as so supplemented. 
 (c) If, during the Effectiveness Period, the number of Registrable
Securities at any time exceeds one hundred percent (100%) of the number of shares of Common Stock then registered in a Registration Statement, then the Company shall file as soon as reasonably practicable, but in any case prior to the
applicable Filing Date, an additional Registration Statement covering the resale by the Holders of not less than the number of such Registrable Securities, subject to any SEC Guidance setting forth a limitation on the number of Registrable
Securities permitted to be registered on such additional Registration Statement. 
 (d) Notify the Holders of Registrable
Securities to be sold (which notice shall, pursuant to clauses (iii) through (vi) hereof, be accompanied by an instruction to suspend the use of the Prospectus until the requisite changes have been made) as promptly as reasonably possible
(and, in the case of (i)(A) below, not less than one (1) Trading Day prior to such filing) and (if requested by any such Person) confirm such notice in writing no later than one (1) Trading Day following the day (i)(A) when a Prospectus or
any Prospectus supplement or post-effective amendment to a Registration Statement is proposed to be filed, (B) when the Commission notifies the Company 

  
 8 








 
whether there will be a “review” of such Registration Statement and whenever the Commission comments in writing on such Registration Statement, and (C) with respect to a
Registration Statement or any post-effective amendment, when the same has become effective, (ii) of any request by the Commission or any other federal or state governmental authority for amendments or supplements to a Registration Statement or
Prospectus or for additional information, (iii) of the issuance by the Commission or any other federal or state governmental authority of any stop order suspending the effectiveness of a Registration Statement covering any or all of the
Registrable Securities or the initiation of any Proceedings for that purpose; (iv) of the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction, or the initiation or threatening of any Proceeding for such purpose; (v) of the occurrence of any event or passage of time that makes the financial statements included in a Registration Statement
ineligible for inclusion therein or any statement made in a Registration Statement or Prospectus or any document incorporated or deemed to be incorporated therein by reference untrue in any material respect or that requires any revisions to a
Registration Statement, Prospectus or other documents so that, in the case of a Registration Statement or the Prospectus, as the case may be, it will not contain any untrue statement of a material fact or omit to state any material fact required to
be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading and (vi) of the occurrence or existence of any pending corporate development with respect to the Company
that the Company believes may be material and that, in the determination of the Company, makes it not in the best interest of the Company to allow continued availability of a Registration Statement or Prospectus, provided that, any and all of such
information shall remain confidential to each Holder until such information otherwise becomes public, unless disclosure by a Holder is required by law; provided, however, in no event shall any such notice contain any information which would
constitute material, non-public information regarding the Company. 
 (e) Use its reasonable best efforts to avoid the issuance of,
or, if issued, obtain the withdrawal of (i) any order stopping or suspending the effectiveness of a Registration Statement, or (ii) any suspension of the qualification (or exemption from qualification) of any of the Registrable Securities
for sale in any jurisdiction, at the earliest practicable moment. 
 (f) Furnish to each Holder, without charge, at least one
conformed copy of each such Registration Statement and each amendment thereto, including financial statements and schedules, all documents incorporated or deemed to be incorporated therein by reference to the extent requested by such Person, and all
exhibits to the extent requested by such Person (including those previously furnished or incorporated by reference) promptly after the filing of such documents with the Commission; provided, that any such item which is available on the EDGAR system
(or successor thereto) need not be furnished in physical form. 
 (g) Subject to the terms of this Agreement, the Company
hereby consents to the use of such Prospectus and each amendment or supplement thereto by each of the selling Holders in connection with the offering and sale of the Registrable Securities covered by such Prospectus and any amendment or supplement
thereto, except after the giving of any notice pursuant to Section 4(d). 

  
 9 








 (h) The Company shall cooperate with any broker-dealer through which a Holder proposes to
resell its Registrable Securities in effecting a filing with the FINRA Corporate Financing Department pursuant to FINRA Rule 5110, as requested by any such Holder, and the Company shall pay the filing fee required by such filing within two
(2) Business Days of request therefor. 
 (i) Prior to any resale of Registrable Securities by a Holder, use its
commercially reasonable efforts to register or qualify or cooperate with the selling Holders in connection with the registration or qualification (or exemption from the Registration or qualification) of such Registrable Securities for the resale by
the Holder under the securities or “Blue Sky” laws of such jurisdictions within the United States as any Holder reasonably requests in writing, to keep each registration or qualification (or exemption therefrom) effective during the
Effectiveness Period and to do any and all other acts or things reasonably necessary to enable the disposition in such jurisdictions of the Registrable Securities covered by each Registration Statement; provided, that, the Company shall not be
required to qualify generally to do business in any jurisdiction where it is not then so qualified, subject the Company to any material tax in any such jurisdiction where it is not then so subject or file a general consent to service of process in
any such jurisdiction. 
 (j) If requested by a Holder, cooperate with such Holder to facilitate the timely preparation and
delivery of certificates representing Registrable Securities to be delivered to a transferee pursuant to a Registration Statement, which certificates shall be free, to the extent permitted by the Purchase Agreement, of all restrictive legends, and
to enable such Registrable Securities to be in such denominations and registered in such names as any such Holder may request. 

(k) Upon the occurrence of any event contemplated by Section 4(d), as promptly as reasonably possible under the
circumstances taking into account the Company’s good faith assessment of any adverse consequences to the Company and its stockholders of the premature disclosure of such event, prepare a supplement or amendment, including a post-effective
amendment, to a Registration Statement or a supplement to the related Prospectus or any document incorporated or deemed to be incorporated therein by reference, and file any other required document so that, as thereafter delivered, neither a
Registration Statement nor such Prospectus will contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they
were made, not misleading. If the Company notifies the Holders in accordance with clauses (iii) through (vi) of Section 4(d) above to suspend the use of any Prospectus until the requisite changes to such Prospectus have been
made, then the Holders shall suspend use of such Prospectus. The Company will use its reasonable best efforts to ensure that the use of the Prospectus may be resumed as promptly as is practicable. The Company shall be entitled to exercise its right
under this Section 4(k) to suspend the availability of a Registration Statement and Prospectus, subject to the payment of partial liquidated damages otherwise required pursuant to Section 2(b), for a period not to exceed 60
calendar days (which need not be consecutive days) in any 12 month period. 
 (l) Comply with all applicable rules and
regulations of the Commission. 

  
 10 








 The Company may require each selling Holder to furnish to the Company a certified statement as to
the number of shares of Common Stock beneficially owned by such Holder and, if required by the Commission, the natural persons thereof that have voting and dispositive control over the shares. During any periods that the Company is unable to meet
its obligations hereunder or provide any other information requested by the Commission with respect to the registration of the Registrable Securities solely because any Holder fails to furnish such information within three (3) Trading Days of
the Company’s request, any liquidated damages that are accruing at such time as to such Holder only shall be tolled and any Event that may otherwise occur solely because of such delay shall be suspended as to such Holder only, until such
information is delivered to the Company. 
 5. REGISTRATION EXPENSES. All fees and expenses incident to
the performance of or compliance with, this Agreement by the Company shall be borne by the Company whether or not any Registrable Securities are sold pursuant to a Registration Statement. The fees and expenses referred to in the foregoing sentence
shall include, without limitation, (i) all registration and filing fees (including, without limitation, fees and expenses of the Company’s counsel and independent registered public accountants) (A) with respect to filings made with
the Commission, (B) with respect to filings required to be made with any Trading Market, as defined in the Purchase Agreement, on which the Common Stock is then listed for trading, (C) in compliance with applicable state securities or Blue
Sky laws reasonably agreed to by the Company in writing (including, without limitation, fees and disbursements of counsel for the Company in connection with Blue Sky qualifications or exemptions of the Registrable Securities) and (D) if not
previously paid by the Company in connection with an Issuer Filing, with respect to any filing that may be required to be made by any broker through which a Holder intends to make sales of Registrable Securities with FINRA pursuant to FINRA Rule
5110, so long as the broker is receiving no more than a customary brokerage commission in connection with such sale, (ii) printing expenses (including, without limitation, expenses of printing certificates for Registrable Securities),
(iii) messenger, telephone and delivery expenses, (iv) fees and disbursements of counsel for the Company, (v) Securities Act liability insurance, if the Company so desires such insurance, and (vi) fees and expenses of all other
Persons retained by the Company in connection with the consummation of the transactions contemplated by this Agreement. In addition, the Company shall be responsible for all of its internal expenses incurred in connection with the consummation of
the transactions contemplated by this Agreement (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expense of any annual audit and the fees and expenses incurred in
connection with the listing of the Registrable Securities on any securities exchange as required hereunder. In no event shall the Company be responsible for any broker or similar commissions of any Holder or, except to the extent provided for in the
Transaction Documents, any legal fees or other costs of the Holders. 
 6. INDEMNIFICATION.  

(a) Indemnification by the Company. The Company shall, notwithstanding any termination of this Agreement, indemnify and hold harmless
each Holder, the officers, directors, members, partners, agents, brokers (including brokers who offer and sell Registrable Securities as principal as a result of a pledge or any failure to perform under a margin call of Common Stock), investment
advisors and employees (and any other Persons with a functionally equivalent role of a Person holding such titles, notwithstanding a lack of such title or any other title) of each of them, 

  
 11 








 
each Person who controls any such Holder (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) and the officers, directors, members, stockholders,
partners, agents and employees (and any other Persons with a functionally equivalent role of a Person holding such titles, notwithstanding a lack of such title or any other title) of each such controlling Person, to the fullest extent permitted by
applicable law, from and against any and all losses, claims, damages, liabilities, costs (including, without limitation, reasonable attorneys’ fees) and expenses (collectively, “Losses”), as incurred, arising out of or
relating to (1) any untrue or alleged untrue statement of a material fact contained in a Registration Statement, any Prospectus or any form of prospectus included in a Registration Statement, or in any amendment or supplement thereto or in any
preliminary prospectus included in a Registration Statement, or arising out of or relating to any omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein (in the case of any
Prospectus, form of prospectus, preliminary prospectus or amendment or supplement thereto, in light of the circumstances under which they were made) not misleading or (2) any violation or alleged violation by the Company of the Securities Act,
the Exchange Act or any state securities law, or any rule or regulation thereunder, in connection with the performance of its obligations under this Agreement, except to the extent, but only to the extent, that (i) such untrue statements or
omissions are based solely upon information regarding such Holder furnished in writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder’s proposed method of
distribution of Registrable Securities and was reviewed and expressly approved in writing by such Holder expressly for use in a Registration Statement, such Prospectus, form of prospectus or preliminary prospectus or in any amendment or supplement
thereto (it being understood that the Holder has approved Annex A hereto for this purpose) or (ii) in the case of an occurrence of an event of the type specified in Section 4(d)(iii)-(vi), the use by such Holder of an outdated,
defective or otherwise unavailable Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated, defective or otherwise unavailable for use by such Holder and prior to the receipt by such Holder of the Advice
contemplated in Section 7(d). The Company shall notify the Holders promptly of the institution, threat or assertion of any Proceeding arising from or in connection with the transactions contemplated by this Agreement of which the Company
is aware. 
 (b) Indemnification by Holders. Each Holder shall, severally and not jointly, indemnify and hold harmless the Company,
its directors, officers, agents and employees, each Person who controls the Company (within the meaning of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the directors, officers, agents or employees of such
controlling Persons, to the fullest extent permitted by applicable law, from and against all Losses, as incurred, to the extent arising out of or based solely upon: (x) such Holder’s failure to comply with the prospectus delivery
requirements of the Securities Act through no fault of the Company or (y) any untrue or alleged untrue statement of a material fact contained in any Registration Statement, any Prospectus, any form of prospectus included in a Registration
Statement or in any amendment or supplement thereto or in any preliminary prospectus included in a Registration Statement, or arising out of or relating to any omission or alleged omission of a material fact required to be stated therein or
necessary to make the statements therein not misleading (i) to the extent, but only to the extent, that such untrue statement or omission is contained in any information so furnished in writing by such Holder to the Company specifically for
inclusion in such Registration Statement or such Prospectus, form of prospectus or preliminary prospectus, (ii) to the extent that such information relates to such Holder’s proposed method of distribution of


  
 12 








 
Registrable Securities and was reviewed and approved by such Holder expressly for use in a Registration Statement (it being understood that the Holder has approved Annex A hereto for this
purpose), such Prospectus, form of prospectus or preliminary prospectus or in any amendment or supplement thereto or (iii) in the case of an occurrence of an event of the type specified in Section 4(d)(iii)-(vi), the use by such
Holder of an outdated, defective or otherwise unavailable Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated, defective or otherwise unavailable for use by such Holder and prior to the receipt by such
Holder of the Advice contemplated in Section 7(c). In no event shall the liability of any selling Holder under this Section 6(b) be greater in amount than the dollar amount of the net proceeds received by such Holder upon the
sale of the Registrable Securities giving rise to such indemnification obligation. 
 (c) Conduct of Indemnification Proceedings. If
any Proceeding shall be brought or asserted against any Person entitled to indemnity hereunder (an “Indemnified Party”), such Indemnified Party shall promptly notify the Person from whom indemnity is sought (the
“Indemnifying Party”) in writing, and the Indemnifying Party shall have the right to assume the defense thereof, including the employment of counsel reasonably satisfactory to the Indemnified Party and the
payment of all fees and expenses incurred in connection with defense thereof; provided, that, the failure of any Indemnified Party to give such notice shall not relieve the Indemnifying Party of its obligations or liabilities pursuant to this
Agreement, except (and only) to the extent that it shall be finally determined by a court of competent jurisdiction (which determination is not subject to appeal or further review) that such failure shall have prejudiced the Indemnifying Party. 

An Indemnified Party shall have the right to employ separate counsel in any such Proceeding and to participate in the defense thereof, but the
fees and expenses of such counsel shall be at the expense of such Indemnified Party or Parties unless: (1) the Indemnifying Party has agreed in writing to pay such fees and expenses, (2) the Indemnifying Party shall have failed promptly to
assume the defense of such Proceeding and to employ counsel reasonably satisfactory to such Indemnified Party in any such Proceeding, or (3) the named parties to any such Proceeding (including any impleaded parties) include both such
Indemnified Party and the Indemnifying Party, and counsel to the Indemnified Party shall reasonably believe that a material conflict of interest is likely to exist if the same counsel were to represent such Indemnified Party and the Indemnifying
Party (in which case, if such Indemnified Party notifies the Indemnifying Party in writing that it elects to employ separate counsel at the expense of the Indemnifying Party, the Indemnifying Party shall not have the right to assume the defense
thereof and the reasonable fees and expenses of no more than one separate counsel shall be at the expense of the Indemnifying Party). The Indemnifying Party shall not be liable for any settlement of any such Proceeding effected without its written
consent, which consent shall not be unreasonably withheld or delayed. No Indemnifying Party shall, without the prior written consent of the Indemnified Party, effect any settlement of any pending Proceeding in respect of which any Indemnified Party
is a party, unless such settlement includes an unconditional release of such Indemnified Party from all liability on claims that are the subject matter of such Proceeding. 

Subject to the terms of this Agreement, all reasonable fees and expenses of the Indemnified Party (including reasonable fees and expenses to
the extent incurred in connection with investigating or preparing to defend such Proceeding in a manner not inconsistent with this Section) shall be paid to the Indemnified Party, as incurred, within ten (10) Trading Days of


  
 13 








 
written notice thereof to the Indemnifying Party; provided, that, the Indemnified Party shall promptly reimburse the Indemnifying Party for that portion of such fees and expenses applicable to
such actions for which such Indemnified Party is judicially determined not to be entitled to indemnification hereunder. 
 (d)
Contribution. If the indemnification under Section 6(a) or 6(b) is unavailable to an Indemnified Party or insufficient to hold an Indemnified Party harmless for any Losses, then each Indemnifying Party shall contribute to the
amount paid or payable by such Indemnified Party, in such proportion as is appropriate to reflect the relative fault of the Indemnifying Party and Indemnified Party in connection with the actions, statements or omissions that resulted in such Losses
as well as any other relevant equitable considerations. The relative fault of such Indemnifying Party and Indemnified Party shall be determined by reference to, among other things, whether any action in question, including any untrue or alleged
untrue statement of a material fact or omission or alleged omission of a material fact, has been taken or made by, or relates to information supplied by, such Indemnifying Party or Indemnified Party, and the parties’ relative intent, knowledge,
access to information and opportunity to correct or prevent such action, statement or omission. The amount paid or payable by a party as a result of any Losses shall be deemed to include, subject to the limitations set forth in this Agreement, any
reasonable attorneys’ or other fees or expenses incurred by such party in connection with any Proceeding to the extent such party would have been indemnified for such fees or expenses if the indemnification provided for in this Section was
available to such party in accordance with its terms. 
 The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 6(d) were determined by pro rata allocation or by any other method of allocation that does not take into account the equitable considerations referred to in the immediately preceding paragraph.
Notwithstanding the provisions of this Section 6(d), no Holder shall be required to contribute pursuant to this Section 6(d), in the aggregate, any amount in excess of the amount by which the net proceeds actually received by
such Holder from the sale of the Registrable Securities subject to the Proceeding exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged
omission. 
 The indemnity and contribution agreements contained in this Section 6 are in addition to any liability that the
Indemnifying Parties may have to the Indemnified Parties. 
 7. MISCELLANEOUS.  

(a) Remedies. In the event of a breach by the Company or by a Holder of any of their respective obligations under this Agreement, each
Holder or the Company, as the case may be, in addition to being entitled to exercise all rights granted by law and under this Agreement, including recovery of damages, shall be entitled to specific performance of its rights under this Agreement.
Each of the Company and each Holder agrees that monetary damages would not provide adequate compensation for any losses incurred by reason of a breach by it of any of the provisions of this Agreement and hereby further agrees that, in the event of
any action for specific performance in respect of such breach, it shall not assert or shall waive the defense that a remedy at law would be adequate. 

  
 14 








 (b) Compliance. Each Holder covenants and agrees that it will comply with the prospectus
delivery requirements of the Securities Act as applicable to it in connection with sales of Registrable Securities pursuant to a Registration Statement. 

(c) Discontinued Disposition. By its acquisition of Registrable Securities, each Holder agrees that, upon receipt of a notice from the
Company of the occurrence of any event of the kind described in Section 4(d)(iii) through (vi), such Holder will forthwith discontinue disposition of such Registrable Securities under a Registration Statement until it is advised
in writing (the “Advice”) by the Company that the use of the applicable Prospectus (as it may have been supplemented or amended) may be resumed. The Company will use its best efforts to ensure that the use of
the Prospectus may be resumed as promptly as is practicable. The Company agrees and acknowledges that any periods during which the Holder is required to discontinue the disposition of the Registrable Securities hereunder shall be subject to the
provisions of Section 2(b). 
 (d) Amendments and Waivers. The provisions of this Agreement, including the provisions of
this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given, unless the same shall be in writing and signed by the Company and the Holders of sixty-seven
(67%) or more of the then outstanding Registrable Securities (including, for this purpose any Registrable Securities issuable upon exercise or conversion of any Security). If a Registration Statement does not register all of the Registrable
Securities pursuant to a waiver or amendment done in compliance with the previous sentence, then the number of Registrable Securities to be registered for each Holder shall be reduced pro rata among all Holders and each Holder shall have the right
to designate which of its Registrable Securities shall be omitted from such Registration Statement. Notwithstanding the foregoing, a waiver or consent to depart from the provisions hereof with respect to a matter that relates exclusively to the
rights of a Holder or some Holders and that does not directly or indirectly affect the rights of other Holders may be given by such Holder or Holders of all of the Registrable Securities to which such waiver or consent relates; provided, however,
that the provisions of this sentence may not be amended, modified, or supplemented except in accordance with the provisions of the first sentence of this Section 7(d). 

(e) Notices. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be delivered
as set forth in the Purchase Agreement. 
 (f) Successors and Assigns. This Agreement shall inure to the benefit of and be
binding upon the successors and permitted assigns of each of the parties and shall inure to the benefit of each Holder. The Company may not assign (except by merger) its rights or obligations hereunder without the prior written consent of the
Holders of at least sixty-seven percent (67%) of the then outstanding Registrable Securities. Each Holder may assign their respective rights hereunder in the manner and to the Persons as permitted under Section 5.8 of the Purchase
Agreement. 
 (g) No Inconsistent Agreements. Neither the Company nor any of its Subsidiaries has entered, as of the date
hereof, nor shall the Company or any of its Subsidiaries, on or after the date of this Agreement, enter into any agreement with respect to its securities, that would have the effect of impairing the rights granted to the Holders in this Agreement or
otherwise materially conflicts with the provisions hereof. Except as set forth on Schedule 3.1(t) to the Disclosure Schedules to the Purchase Agreement, neither the Company nor any of its Subsidiaries has previously entered into any agreement
granting any registration rights with respect to any of its securities to any Person that have not been satisfied in full. 

  
 15 








 (h) Execution and Counterparts. This Agreement may be executed in two or more
counterparts, all of which when taken together shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that both parties need
not sign the same counterpart. In the event that any signature is delivered by facsimile transmission or by e-mail delivery of a “.pdf” format data file, such signature shall create a valid and binding obligation of the party executing (or
on whose behalf such signature is executed) with the same force and effect as if such facsimile or “.pdf” signature page were an original thereof. 

(i) Governing Law. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be
determined in accordance with the provisions of the Purchase Agreement. 
 (j) Cumulative Remedies. The remedies provided
herein are cumulative and not exclusive of any other remedies provided by law. 
 (k) Severability. If any term, provision,
covenant or restriction of this Agreement is held by a court of competent jurisdiction to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties hereto shall use their commercially reasonable efforts to find and employ an alternative means to achieve the same or substantially the same result as that contemplated
by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention of the parties that they would have executed the remaining terms, provisions, covenants and restrictions without including any of such that
may be hereafter declared invalid, illegal, void or unenforceable. 
 (l) Headings. The headings in this Agreement are for
convenience only, do not constitute a part of the Agreement and shall not be deemed to limit or affect any of the provisions hereof. 

(m) Independent Nature of Holders’ Obligations and Rights. The obligations of each Holder hereunder are several and not joint with
the obligations of any other Holder hereunder, and no Holder shall be responsible in any way for the performance of the obligations of any other Holder hereunder. Nothing contained herein or in any other agreement or document delivered at any
closing, and no action taken by any Holder pursuant hereto or thereto, shall be deemed to constitute the Holders as a partnership, an association, a joint venture or any other kind of group or entity, or create a presumption that the Holders are in
any way acting in concert or as a group or entity with respect to such obligations or the transactions contemplated by this Agreement or any other matters, and the Company acknowledges that the Holders are not acting in concert or as a group, and
the Company shall not asset any such claim, with respect to such obligations or transactions. Each Holder shall be entitled to protect and enforce its rights, including without limitation the rights arising out of this Agreement, and it shall not be
necessary for any other Holder to be joined as an additional party in any proceeding for such purpose. The use of a single 

  
 16 








 
agreement with respect to the obligations of the Company contained was solely in the control of the Company, not the action or decision of any Holder, and was done solely for the convenience of
the Company and not because it was required or requested to do so by any Holder. It is expressly understood and agreed that each provision contained in this Agreement is between the Company and a Holder, solely, and not between the Company and the
Holders collectively and not between and among Holders. 
 (n) English Language Controls. This Agreement has been made in Russian and
English language. In the event of a conflict or inconsistency between the English and Russian versions of the agreement, the English version shall prevail. 

(Signature Pages Follow) 

  
 17 








 IN WITNESS WHEREOF, the parties have executed this Registration Rights Agreement as of the date
first written above. 
  

			
	CLEVELAND BIOLABS, INC.
		
	By:	 	 /s/ Yakov Kogan

	 Name: Yakov Kogan
 Title: Chief
Executive Officer



 [SIGNATURE PAGE OF HOLDERS FOLLOWS] 







 [SIGNATURE PAGE OF HOLDERS TO CBLI RRA] 

Name of Holder: Mikhail Mogutov             

Signature of Authorized Signatory of Holder: /s/ Mikhail
Mogutov                                        
         
 Name of Authorized Signatory: Mikhail
Mogutov             
  

			
	Title of Authorized Signatory:	  	 








 [SIGNATURE PAGE OF HOLDERS TO CBLI RRA] 

Name of Holder: 
 Signature of Authorized Signatory of
Holder:
                                         
                                         
   
 Name of Authorized Signatory: 
 Title of
Authorized Signatory: 







 [SIGNATURE PAGE OF HOLDERS TO CBLI RRA] 

Name of Holder: 
 Signature of Authorized Signatory of
Holder:
                                         
                                        

Name of Authorized Signatory: 
 Title of Authorized Signatory:








 ANNEX A 

Plan of Distribution 

Each Selling Stockholder (the “Selling Stockholders”) of the common stock and any of their pledgees,
assignees and successors-in-interest may, from time to time, sell any or all of their shares of common stock covered hereby on the principal Trading Market or any other stock exchange, market or trading facility on which the shares are traded or in
private transactions. These sales may be at fixed or negotiated prices. A Selling Stockholder may use any one or more of the following methods when selling shares: 
  

	 	•	 	ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; 

  

	 	•	 	block trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction; 


 

	 	•	 	purchases by a broker-dealer as principal and resale by the broker-dealer for its account; 

  

	 	•	 	an exchange distribution in accordance with the rules of the applicable exchange; 

  

	 	•	 	privately negotiated transactions; 

  

	 	•	 	settlement of short sales entered into after the effective date of the registration statement of which this prospectus is a part; 

  

	 	•	 	in transaction through broker-dealers that agree with the Selling Stockholders to sell a specified number of such shares at a stipulated price per share; 


 

	 	•	 	through the writing or settlement of options or other hedging transactions, whether through an options exchange or otherwise; 

  

	 	•	 	a combination of any such methods of sale; or 

  

	 	•	 	any other method permitted pursuant to applicable law. 

 The Selling Stockholders may also sell
shares under Rule 144 under the Securities Act of 1933, as amended (the “Securities Act”), if available, rather than under this prospectus. 

Broker-dealers engaged by the Selling Stockholders may arrange for other brokers-dealers to participate in sales. Broker-dealers may receive
commissions or discounts from the Selling Stockholders (or, if any broker-dealer acts as agent for the purchaser of shares, from the purchaser) in amounts to be negotiated, but, except as set forth in a supplement to this Prospectus, in the case of
an agency transaction, not in excess of a customary brokerage commission in compliance with FINRA NASD Rule 2440; and in the case of a principal transaction, a markup or markdown in compliance with NASD IM-2440. 

  
 Annex A-1 








 In connection with the sale of the common stock or interests therein, the Selling Stockholders
may enter into hedging transactions with broker-dealers or other financial institutions, which may in turn engage in short sales of the common stock in the course of hedging the positions they assume. The Selling Stockholders may also sell shares of
the common stock short after the effective date of the registration statement of which this prospectus is a part and deliver these securities to close out their short positions, or loan or pledge the common stock to broker-dealers that in turn may
sell these securities. The Selling Stockholders may also enter into option or other transactions with broker-dealers or other financial institutions or create one or more derivative securities which require the delivery to such broker-dealer or
other financial institution of shares offered by this prospectus, which shares such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction). 

The Selling Stockholders and any broker-dealers or agents that are involved in selling the shares may be deemed to be “underwriters”
within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares purchased by them may be deemed to be underwriting
commissions or discounts under the Securities Act. Each Selling Stockholder has informed the Company that it does not have any written or oral agreement or understanding, directly or indirectly, with any person to distribute the Common Stock. In no
event shall any broker-dealer receive fees, commissions and markups which, in the aggregate, would exceed eight percent (8%). 
 The Company
is required to pay certain fees and expenses incurred by the Company incident to the registration of the shares. The Company has agreed to indemnify the Selling Stockholders against certain losses, claims, damages and liabilities, including
liabilities under the Securities Act. 
 Because Selling Stockholders may be deemed to be “underwriters” within the meaning of the
Securities Act, they will be subject to the prospectus delivery requirements of the Securities Act including Rule 172 thereunder. The Selling Stockholders have advised us that there is no underwriter or coordinating broker acting in connection with
the proposed sale of the resale shares by the Selling Stockholders. 
 We agreed to keep this prospectus effective until the earlier of
(i) the date on which the shares may be resold by the Selling Stockholders without registration and without regard to any volume or manner-of-sale limitations by reason of Rule 144, without the requirement for the Company to be in compliance
with the current public information under Rule 144 under the Securities Act or any other rule of similar effect or (ii) all of the shares have been sold pursuant to this or another prospectus or Rule 144 under the Securities Act or any other
rule of similar effect. The resale shares will be sold only through registered or licensed brokers or dealers if required under applicable state securities laws. In addition, in certain states, the resale shares of Common Stock covered hereby may
not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with. 

Under applicable rules and regulations under the Exchange Act, any person engaged in the distribution of the resale shares may not
simultaneously engage in market making activities with respect to the common stock for the applicable restricted period, as defined in Regulation M, prior to the commencement of the distribution. In addition, the Selling Stockholders will be subject
to 

  
 Annex A-2 








 
applicable provisions of the Exchange Act and the rules and regulations thereunder, including Regulation M, which may limit the timing of purchases and sales of shares of the common stock by the
Selling Stockholders or any other person. We will make copies of this prospectus available to the Selling Stockholders and have informed them of the need to deliver a copy of this prospectus to each purchaser at or prior to the time of the sale
(including by compliance with Rule 172 under the Securities Act). 

  
 Annex A-3 








 ANNEX B 

CLEVELAND BIOLABS, INC. 

Selling Stockholder Notice and Questionnaire 

The undersigned beneficial owner of common stock (the “Registrable Securities”) of Cleveland BioLabs,
Inc., a Delaware corporation (the “Company”), understands that the Company has filed or intends to file with the Securities and Exchange Commission (the “Commission”) a registration
statement (the “Registration Statement”) for the registration and resale under Rule 415 of the Securities Act of 1933, as amended (the “Securities Act”), of the Registrable
Securities, in accordance with the terms of the Registration Rights Agreement (the “Registration Rights Agreement”) to which this document is annexed. A copy of the Registration Rights Agreement is
available from the Company upon request at the address set forth below. All capitalized terms not otherwise defined herein shall have the meanings ascribed thereto in the Registration Rights Agreement. 

Certain legal consequences arise from being named as a selling stockholder in the Registration Statement and the related prospectus.
Accordingly, holders and beneficial owners of Registrable Securities are advised to consult their own securities law counsel regarding the consequences of being named or not being named as a selling stockholder in the Registration Statement and the
related prospectus. 
 NOTICE 

The undersigned beneficial owner (the “Selling Stockholder”) of Registrable Securities hereby elects to include the
Registrable Securities owned by it in the Registration Statement. 
 The undersigned hereby provides the following information to the
Company and represents and warrants that such information is accurate: 
 QUESTIONNAIRE 

1. NAME. 

(a) Full Legal Name of Selling Stockholder 
  

 
 (b) Full Legal
Name of Registered Holder (if not the same as (a) above) through which Registrable Securities are held: 
  

 
  

  
 Annex B-1 








 (c) Full Legal Names of any Control Persons, including any Natural Control Person (which
means a natural person who directly or indirectly alone or with others has power to vote or dispose of the securities covered by this Questionnaire): 
  

 
 2. ADDRESS
FOR NOTICES TO SELLING STOCKHOLDER: 
  

 
  

 
  

 
  

			
	Telephone:	  	 

  

			
	Fax:	  	 

  

			
	Contact Person:	  	 

 3. BROKER-DEALER STATUS: 

(a) Are you a broker-dealer? 

Yes   ̈    No  
 ̈ 
 (b) If “yes” to Section 3(a), did you receive your
Registrable Securities as compensation for investment banking services to the Company? 
 Yes   ̈    No   ̈ 
 Note: If “no”
to Section 3(b), the Commission’s staff has indicated that you should be identified as an underwriter in the Registration Statement. 

(c) Are you an affiliate of a broker-dealer? 

Yes   ̈    No  
 ̈ 
 (d) If you are an affiliate of a broker-dealer, do you certify that you purchased
the Registrable Securities in the ordinary course of business, and at the time of the purchase of the Registrable Securities to be resold, you had no agreements or understandings, directly or indirectly, with any person to distribute the Registrable
Securities? 
 Yes   ̈    No   ̈ 
 Note: If “no” to Section 3(d), the Commission’s staff has indicated that you
should be identified as an underwriter in the Registration Statement. 

  
 Annex B-2 








 4. BENEFICIAL OWNERSHIP OF SECURITIES
OF THE COMPANY OWNED BY THE SELLING STOCKHOLDER. 

Except as set forth below in this Item 4, the undersigned is not the beneficial or registered owner of any securities of the Company other than the
securities issuable pursuant to the Purchase Agreement. 
 (a) Type and Amount of other securities beneficially owned by the
Selling Stockholder: 
 5. RELATIONSHIPS WITH THE COMPANY: 

Except as set forth below, neither the undersigned nor any of its affiliates, officers, directors or principal equity holders (owners of five (5%) of
more of the equity securities of the undersigned) has held any position or office or has had any other material relationship with the Company (or its predecessors or affiliates) during the past three years. 

State any exceptions here: 
 6. PLAN
OF DISTRIBUTION: 
 The undersigned has reviewed the form of Plan of Distribution attached as Annex A hereto, and hereby
confirms that, except as set forth below, the information contained therein regarding the undersigned and its plan of distribution is correct and complete. 

State any exceptions here: 
 The undersigned
agrees to promptly notify the Company of any inaccuracies or changes in the information provided herein that may occur subsequent to the date hereof at any time prior to the effectiveness of the Registration Statement and thereafter at any times
while the Registration Statement remains effective. 
 By signing below, the undersigned consents to the disclosure of the information
contained herein in its answers to Items 1 through 6 and the inclusion of such information in the Registration Statement and the related prospectus and any amendments or supplements thereto. The undersigned understands that such information will be
relied upon by the Company in connection with the preparation or amendment of the Registration Statement and the related prospectus and any amendments or supplements thereto. 

The undersigned hereby acknowledges and is advised of the following Interpretation A.65 of the July 1997 SEC Manual of Publicly Available
Telephone Interpretations regarding short selling: 
 “An Issuer filed a Form S-3 registration statement for a secondary
offering of common stock which is not yet effective. One of the selling stockholders wanted to do a short sale of common stock “against the box” and cover the short sale with registered shares after the effective


  
 Annex B-3 








 
date. The issuer was advised that the short sale could not be made before the registration statement becomes effective, because the shares underlying the short sale are deemed to be sold at the
time such sale is made. There would, therefore, be a violation of Section 5 if the shares were effectively sold prior to the effective date.” 

By returning this Notice and Questionnaire, the undersigned will be deemed to be aware of the foregoing interpretation. 

I confirm that, to the best of my knowledge and belief, the foregoing statements (including without limitation the answers to this Notice and
Questionnaire) are correct. 
 IN WITNESS WHEREOF the undersigned,
by authority duly given, has caused this Notice and Questionnaire to be executed and delivered either in person or by its duly authorized agent. 
  

									
	Date:	 	  	 	 	 	Beneficial Owner:	 	  


									
					
		 		 		 	 By:
	 	 
		 		 		 		 	 Name:

		 		 		 		 	 Title:


 PLEASE FAX A COPY (OR EMAIL A .PDF COPY) OF THE COMPLETED AND EXECUTED NOTICE AND QUESTIONNAIRE, AND RETURN THE ORIGINAL BY
OVERNIGHT MAIL, TO: 

  
 Annex B-4